condition mean min max ZT0-3 0.017587652250000002 0.0 0.035175304500000004 ZT4-7 0.028047531166666667 0.0 0.056095062333333334 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0